Useful reference texts
General reference:
Altman DG. Practical statistics for medical research. London: Chapman and Hall, 1991.
Everitt B. Statistical methods for medical investigations. London: Edward Arnold, 1989.*
Setting up clinical trials:
EORTC Quality Control Group, Therasse P. (eds). A practical guide to EORTC studies. Brussels: EORTC Data Center, 1996.
Pocock SJ. Clinical trials: A practical approach. Chichester, England: John Wiley, 1983.
Peto R. et al. Design and analysis of randomized clinical trials requiring prolonged observation of each patient. I. Introduction and design. Br J Cancer. 1976 Dec;34(6):585-612.
Schwartsmann G, et al. EORTC New Drug Development Office coordinating and monitoring programme for phase I and II trials with new anticancer agents. Eur J Cancer.1991;27(9):1162-8.
Sample size:
Machin D, Campbell MJ, Fayers PM, Pinol APY. Sample size tables for clinical studies. Oxford [England] ; Malden, MA, USA : Blackwell Science, 1997 (see also sample size software)

